Fan-drive pulley.



R. H. POTEET.

FAN DRIVE PULLEY.

APPLICATION FILED JAN. 9. 1919. ,820,089. Patented out. 28,1919.

ROBERT H. POTEET, F SOLGOHACHIA, ARKANSAS.

4,FAn-nimm PULLEY.

Specification of Letters Patent.

Patented (ict. 28, fllig.

Application led January 9, 1919. Serial No. 270,348.

To all whom it may concern.'

Be it known that I, ROBERT H. POTEET, a citizen of the United States,residing at Solgohachia, in the' county of Conway, State of Arkansas,have invented certain new and J useful Improvements in Fan-DrivePulleys; and I do Ahereby declare the following to be a full, clear, andexact description of the invention, Vsuch as will enable others skilledin the artto which it appertains to make and use the same.

This invention relates to new and useful improvements in crankingdevices for automobiles and panticularly to `such parts as areincorporated in the pulley which drives the Ifan` shaft.J

One object of the present invention is to rovide a novel and improvedpulley wherev1n the forward end of thel crank shaft can be attached bymeans of the starting ratchet pin, thus', making the ratchet pin serve adouble function.

Another object is to provide a novelv and improved pulley of thischaracter wherein the starting ratchet pin is positivelyheld againstdisplacement and free from wear at such pointsas tend to cause the pinto become loose.

Other objects and advantages will be rapparent from the followingdescription when taken in connection with the accompanying drawing.

In the drawing: y

Figure 1 is a side elevation of the fan belt pulley mounted on theforward end of the crank shaft of the engine of a Ford automobile.

Fig. 2 is a front .elevation of the same. Fig. 3 is a verticalllongitudinal sectional view taken on the line 3 3 of Fig. 2.

' Fig. 4 is a vertical transverse sectional view taken on the line 4 4of Fig. 1, showliong tlhe arrangement vof the retaining spring In thefan belt wheel or pulley which is carried by the forward end of theengine shaft, of the Ford` automobile, the starting ratchet pin isdisposed transversely through Ithe central hollow hub of the 'pulley andthe ends of this pin, inwardly of the flange of the hub, are providedwith transverse Acotter 1pins which vhold the pin against longitudinalmovement". These pins are frequently broken withl the result that theratchet pin slidesthrough'one of) the openings in the ange of the pulleyand renders the cranking of the engine impossible. Furthermore, the -pinhas a tendency to become wo-rn by the hub y'flange so that the pinbecomes loose, and the pulley permitted to wabble on the engine shaft.Itis the particular object of they-present invention to overcome thesedefects, whereby the pin will be held fromdisplacement and the pulleyheld from wabbling on the engine shaft. Furthermore, r

the present invention does away with the use of the cotter pins. K

Referring particularly -to the accompanying drawing, 10 representstheforward end portion of the engine shaft on which'the 70 fan belt pulleyis mounted, as shown at 11. This pulley is formed with the hub portion12 into the inner end of which the forward end of the engine shaft isdisposed.. The

starting ratchet pin 13 is then passed through 7 5 against the innerface of the closed end, is a spring member 16 which also bears againstthe adjacent end of the engine shaft to hold the same firmly inengagement with the ratchet pin. In the peripheral face of the pulleythere is formed a'. circumferential 85 groove 17, and this grooveterminates, at its ends, at the slots 18 formed through the flange ofthe pulley. The ends of the spring band 1 9, which is disposed in thegroove 17, v

are turned inwardly at right angles and en- -l gaged inv said slots,whereby the band is held against displacement, and also against rotativemovement in said groove. Adjacent each of the slots there is formed abeveledM notched portion 20 to permit the introduc- 95 It win be notedthat the ends.' of the pin 13 pass through openings 21 `in the bosses100 22, which are formed on the inner' face of 'the outer flange of thepulley, and terminate flush with the bottomT wall of the groove 17,sotha-t the spring band engages with said ends to hold the pin againstany tendency V toward aendwise movement.

The spring 6` serves to prevent rattling of the vengine s aft and thepulley thereon,

whereby danger ofthe pin and hub portion of the pulley'wearing andbecoming loose, 110` is obviated. The spring band takes the place oftheCotter pins first-.,mentioned, sothat all of the parts are positivelyand firmly held in place.v

What is lclaimed is .belt wheel for the fan mounted thereon, said beltwheel havin a central hub portion with a closed outer en the peripheralface of the pulley lbeing formed with a circumferential grooveterminating at adjacent points in slots, a startin ratchet pin disposedtrans`- versely throug the pulley and engine shaft and having its oposite ends lying in the sameplane asthe groove, and a spring banddisposed in said groove and havlng its ends turned into said slots andbearingl against the ends of said 1n. p 2. The combination with theforward end of an automobile engine shaft, of a fan belt pulley havingan outer peripheral flange and an inner hub portion, the said hubportion bein fclosed at its outer end, the said end of t e` engine shaftbeing disposed ,within said hub portion, a transverse pin disposed ottomwall of the saidJ through the pulle and engine shaft, a resilient memberwit inl the hub portion and bearing on the end of the engine shaft, andmeans carried by the outer peripheral face of the pulley and engagingwith the ends of the said pin to hold the same from movement.y

3. A fan shaft pulley for an automobile engine shaft including a flangedbody having a central hub portion for the reception of the engine shaft,a transverse starting ratchet pin disposed through the pulley and engineshaft, and means carried circumferentially on the pulley for holding thepin against longitudinal movement, and means within the hub portion andengaging therewith and with the engine shaft for holding the pulleyagainst movement on the said shaft.

In testimony whereof, I aifix my signature inthe presence of twowitnessess.

'ROB-ERT H. POTEET.

Witnesses:

J. D. FRYER, It.` L. TICE.

